A 128kbyte solder-in board to replace original 8k & 32k SRAM ICs on genuine game carts for the conversion to a LSDJ capable flash cart.
Requires soldering.
There is currently NO guide for this, you'll need to have an understanding of the MBC pinout on the cart you are working on.
SRAM IC used - AS6C1008-55 (Or equivalent, there are literally dozens of 128k x 8, 5v SRAM IC's on the market, nearly all will use the same footprint and pinout. Confirm with datasheet to check compatibility)